/* SENTINEL — flat Ubuntu-MATE-style theme: white / black / grey, Bitcoin orange, light-blue accent */
/* Ubuntu font family, self-hosted (Ubuntu Font Licence 1.0) — CSP allows same-origin only. */
@font-face { font-family: 'Ubuntu'; font-style: normal; font-weight: 400; font-display: swap; src: url('fonts/ubuntu-400.woff2') format('woff2'); }
@font-face { font-family: 'Ubuntu'; font-style: normal; font-weight: 500; font-display: swap; src: url('fonts/ubuntu-500.woff2') format('woff2'); }
@font-face { font-family: 'Ubuntu'; font-style: normal; font-weight: 700; font-display: swap; src: url('fonts/ubuntu-700.woff2') format('woff2'); }
@font-face { font-family: 'Ubuntu Mono'; font-style: normal; font-weight: 400; font-display: swap; src: url('fonts/ubuntumono-400.woff2') format('woff2'); }
@font-face { font-family: 'Ubuntu Mono'; font-style: normal; font-weight: 700; font-display: swap; src: url('fonts/ubuntumono-700.woff2') format('woff2'); }

:root {
  --bg: #262626;
  --bg2: #1c1c1c;
  --panel: #333333;
  --panel-hover: #3c3c3c;
  --border: #454545;
  --text: #ffffff;
  --muted: #c2c2c2;
  --faint: #8f8f8f;
  --gold: #f7931a;       /* Bitcoin orange — primary accent */
  --gold-dark: #dd7d0a;
  --green: #58a6ff;      /* proven / ok — light blue */
  --red: #e05252;
  --amber: #f7931a;
  --blue: #6fb8ff;       /* light-blue accent (links, WATCH) */
  --mono: 'Ubuntu Mono', 'Consolas', 'SF Mono', monospace;
  --sans: 'Ubuntu', 'Segoe UI', system-ui, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { background: var(--bg); }
body { background: var(--bg); color: var(--text); font-family: var(--sans); font-size: 17.5px; font-weight: 400; line-height: 1.65; min-height: 100vh; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); font-size: 0.88em; background: var(--bg2); padding: 2px 7px; border-radius: 6px; word-break: break-all; }
code.wide { display: block; margin: 4px 0; padding: 8px 10px; }
pre { font-family: var(--mono); font-size: 13.5px; background: var(--bg2); padding: 16px 18px; border-radius: 12px; overflow-x: auto; white-space: pre-wrap; }

.topbar { display: flex; align-items: center; gap: 26px; padding: 0 28px; height: 70px; background: var(--gold); position: sticky; top: 0; z-index: 10; box-shadow: 0 2px 12px rgba(0, 0, 0, 0.5); }
.brand { font-family: var(--sans); font-weight: 700; letter-spacing: 0.2em; color: #ffffff !important; font-size: 19px; }
.brand:hover { text-decoration: none; }
.topbar nav { display: flex; gap: 2px; flex-wrap: wrap; }
.topbar nav a { color: rgba(255, 255, 255, 0.95); font-family: var(--sans); font-weight: 500; font-size: 13.5px; letter-spacing: 0.04em; padding: 8px 13px; border-radius: 8px; }
.topbar nav a:hover, .topbar nav a.active { color: #fff; background: rgba(0, 0, 0, 0.25); text-decoration: none; }

.container { max-width: 1080px; margin: 0 auto; padding: 48px 28px 110px; }
.footer { color: var(--faint); font-family: var(--sans); font-size: 14px; padding: 28px; text-align: center; }

.tm-wrap { position: relative; border-radius: 14px; background: var(--panel); overflow-x: auto; box-shadow: 0 0 30px rgba(0, 0, 0, 0.45), 0 0 60px rgba(255, 255, 255, 0.04); }
.tm-canvas { display: block; }
.tm-tip { position: absolute; background: var(--bg2); color: var(--text); font-family: var(--mono); font-size: 11px; padding: 6px 9px; border-radius: 8px; pointer-events: none; white-space: nowrap; z-index: 5; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5); }
.tm-legend { display: flex; flex-wrap: wrap; gap: 8px 16px; margin: 16px 0; }
.tm-chip { display: inline-flex; align-items: center; gap: 7px; font-family: var(--sans); font-size: 13.5px; color: var(--muted); }
.tm-chip i { width: 11px; height: 11px; border-radius: 50%; display: inline-block; background: #8f8f8f; }
.tm-chip.anc i { background: #6fb8ff; }
.tm-chip.root i { background: #f7931a; }
.tm-chip.desc i { background: #ffffff; }
.tm-story { border-left: 4px solid var(--gold); padding: 6px 0 6px 20px; margin-top: 18px; border-radius: 2px; }
.tm-step { font-family: var(--sans); font-size: 15.5px; color: var(--text); padding: 6px 0; }
.tm-axis { display: flex; justify-content: space-between; font-family: var(--sans); font-size: 12.5px; color: var(--faint); margin-top: 6px; }

.sponsor { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin: 0 28px; padding: 16px 22px; border-radius: 12px; font-family: var(--sans); font-size: 13.5px; background: var(--panel); }
.sponsor-tag { color: var(--gold); font-size: 11px; letter-spacing: 0.22em; font-weight: 700; }
.sponsor-link { color: var(--text); }
.sponsor-note { color: var(--faint); font-size: 12px; }

h1 { font-size: 52px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; margin-bottom: 16px; }
h2 { font-family: var(--sans); font-size: 38px; font-weight: 700; letter-spacing: -0.015em; color: var(--text); margin: 64px 0 20px; }
.muted { color: var(--muted); font-size: 15px; }
.eyebrow { font-family: var(--sans); font-size: 13px; font-weight: 700; letter-spacing: 0.26em; color: var(--gold); margin-bottom: 14px; }
.subtitle { color: var(--muted); font-size: 20px; max-width: 780px; }

/* hero */
.hero { padding: 70px 0 56px; text-align: left; }
.hero h1 { font-size: 58px; line-height: 1.06; max-width: 820px; }
.hero h1 .accent { color: var(--gold); }
.hero p { margin: 24px 0 38px; }
.row { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.btn { display: inline-block; font-family: var(--sans); font-weight: 500; font-size: 15px; padding: 13px 28px; border: 0; border-radius: 8px; color: #fff; background: var(--panel); cursor: pointer; }
.btn:hover { background: var(--panel-hover); color: #fff; text-decoration: none; }
.btn.primary { background: var(--gold); color: #ffffff; font-weight: 500; }
.btn.primary:hover { background: var(--gold-dark); color: #ffffff; }

/* stat strip */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin: 40px 0; }
.stat { background: var(--panel); border-radius: 14px; padding: 20px 22px; }
.stat .k { font-family: var(--sans); font-weight: 500; font-size: 12px; letter-spacing: 0.14em; color: var(--faint); text-transform: uppercase; }
.stat .v { font-family: var(--sans); font-weight: 700; font-size: 27px; margin-top: 4px; color: var(--text); }
.stat .v.gold { color: var(--gold); }

/* event cards */
.cards { display: flex; flex-direction: column; gap: 18px; }
.card { background: var(--panel); border-left: 5px solid var(--panel); border-radius: 14px; padding: 22px 26px; display: block; color: var(--text); }
.card:hover { background: var(--panel-hover); text-decoration: none; }
.card .head { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-bottom: 6px; }
.card .id { font-family: var(--mono); font-size: 12px; color: var(--faint); letter-spacing: 0.08em; }
.card .headline { font-size: 21px; font-weight: 700; margin-bottom: 5px; line-height: 1.3; }
.card .summary { color: var(--muted); font-size: 15px; }
.card .facts { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 16px; font-family: var(--sans); font-size: 13.5px; color: var(--faint); }
.card .facts b { color: var(--text); font-weight: 500; font-family: var(--mono); font-size: 13px; }
.card.sev-CRITICAL { border-left-color: var(--red); }
.card.sev-HIGH { border-left-color: var(--gold); }
.card.sev-WATCH { border-left-color: var(--blue); }
.card.sev-RESEARCH { border-left-color: var(--faint); }

.sev { font-family: var(--sans); font-weight: 700; font-size: 11px; letter-spacing: 0.14em; padding: 5px 12px; border-radius: 999px; background: var(--bg2); }
.sev-CRITICAL { color: var(--red); }
.sev-HIGH { color: var(--gold); }
.sev-WATCH { color: var(--blue); }
.sev-RESEARCH { color: var(--muted); }
.invalid { color: var(--red); font-family: var(--sans); font-weight: 500; font-size: 13px; letter-spacing: 0.08em; }

/* report page */
.report-head { padding: 26px 0 6px; }
.meta-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; margin-top: 28px; }
.meta-grid > div { background: var(--panel); border-radius: 12px; padding: 14px 18px; }
.meta-grid span { display: block; font-family: var(--sans); font-weight: 500; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); }
.meta-grid strong { font-family: var(--mono); font-size: 15px; font-weight: 700; }
section { margin-bottom: 10px; }
section p { margin-bottom: 14px; max-width: 800px; }

.scores { display: flex; flex-direction: column; gap: 10px; max-width: 640px; margin-bottom: 14px; }
.score { display: grid; grid-template-columns: 100px 1fr 52px; align-items: center; gap: 14px; font-family: var(--sans); font-size: 13.5px; }
.score .k { color: var(--faint); }
.score .v { text-align: right; font-family: var(--mono); }
.bar, .simbar { height: 10px; background: var(--bg2); border-radius: 999px; overflow: hidden; }
.bar > div { height: 100%; background: var(--gold); border-radius: 999px; }
.simbar { display: inline-block; width: 90px; vertical-align: middle; }
.simbar > div { height: 100%; background: var(--blue); border-radius: 999px; }

ul.claims { list-style: none; max-width: 820px; }
ul.claims li { padding: 14px 20px; border-left: 5px solid var(--panel); border-radius: 12px; margin-bottom: 12px; background: var(--panel); font-size: 16px; }
ul.claims.proven li { border-left-color: var(--green); }
ul.claims.inferred li { border-left-color: var(--gold); }
ul.claims.unknown li { border-left-color: var(--faint); color: var(--muted); }
.claims .refs { margin-top: 6px; }
.claims .meth, .claims .conf { font-size: 13.5px; color: var(--faint); display: block; margin-top: 5px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { font-family: var(--sans); font-weight: 500; font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); text-align: left; padding: 10px 12px; border-bottom: 2px solid var(--border); }
td { padding: 11px 12px; border-bottom: 1px solid #3a3a3a; font-family: var(--mono); font-size: 13.5px; }
tr:hover td { background: var(--panel); }

.analyst { background: var(--panel); border-radius: 14px; padding: 20px 24px; font-size: 16px; max-width: 820px; }
.cite pre { border-left: 4px solid var(--gold); }

/* forms */
input[type=text], input[type=search], select { background: var(--bg2); border: 2px solid transparent; color: var(--text); font-family: var(--mono); font-size: 15px; padding: 13px 18px; border-radius: 10px; width: 100%; outline: none; }
input:focus { border-color: var(--gold); }
.searchrow { display: flex; gap: 12px; margin: 24px 0 32px; max-width: 760px; }
.searchrow input { flex: 1; }
.filters { display: flex; gap: 12px; flex-wrap: wrap; margin: 16px 0 28px; }
.filters select, .filters input { width: auto; min-width: 150px; }

.notice { border-radius: 12px; padding: 18px 22px; background: var(--panel); color: var(--muted); font-size: 15px; margin: 20px 0; max-width: 820px; }
.error { color: var(--red); }
.loading { color: var(--faint); font-family: var(--sans); font-size: 15px; padding: 34px 0; }

/* digest */
.digest-slot { font-family: var(--sans); font-weight: 700; font-size: 12px; letter-spacing: 0.18em; color: var(--gold); text-transform: uppercase; margin-bottom: 4px; }

/* age bands */
.band { display: grid; grid-template-columns: 110px 1fr 150px; gap: 14px; align-items: center; font-family: var(--sans); font-size: 13.5px; margin-bottom: 8px; }
.band .lbl { color: var(--muted); }
.band .amt { text-align: right; font-family: var(--mono); }

@media (max-width: 720px) {
  body { font-size: 16.5px; }
  h1 { font-size: 36px; }
  .hero h1 { font-size: 40px; }
  h2 { font-size: 29px; }
  .subtitle { font-size: 18px; }
  .topbar { height: auto; padding: 14px 18px; flex-wrap: wrap; gap: 12px; }
  .container { padding: 30px 18px 70px; }
  .band { grid-template-columns: 90px 1fr 110px; }
}

/* ============================== TX BOARDS ============================== */
.container.wide { max-width: 1320px; }
.board { position: relative; border-radius: 14px; overflow: hidden; margin: 18px 0 30px; }
.board-canvas-wrap { position: relative; width: 100%; }
.board-note { font-size: 12.5px; color: var(--faint); }

/* Value Flow Explorer — light board */
.board-light { background: #f7f7f5; color: #1a1a1a; }
.board-light .board-note { color: #8a8a8a; }
.board-topbar { display: flex; align-items: center; justify-content: center; gap: 22px; flex-wrap: wrap; padding: 13px 18px; background: #ffffff; border-bottom: 1px solid #e4e4e0; font-size: 14px; color: #555; }
.flow-depth-label { color: #999; letter-spacing: 1px; font-size: 12.5px; text-transform: uppercase; }
.flow-stepper { display: inline-flex; align-items: center; gap: 8px; font-weight: 500; }
.flow-stepper b { min-width: 22px; text-align: center; font-size: 16px; color: #1a1a1a; }
.flow-detail { margin-left: auto; display: inline-flex; align-items: center; gap: 10px; color: #999; font-size: 12.5px; text-transform: uppercase; letter-spacing: 1px; }
.flow-detail input[type=range] { width: 140px; accent-color: var(--gold); }
.mini-btn { background: #ececea; border: none; color: #333; width: 26px; height: 26px; border-radius: 6px; font-size: 15px; font-weight: 700; cursor: pointer; line-height: 1; padding: 0; }
.mini-btn:hover { background: var(--gold); color: #fff; }
.board-bottombar { display: flex; justify-content: space-between; align-items: center; gap: 14px; padding: 10px 18px; background: #ffffff; border-top: 1px solid #e4e4e0; }
.api-btn { width: auto; padding: 0 16px; height: 30px; display: inline-flex; align-items: center; background: var(--gold); color: #fff; font-size: 12px; letter-spacing: 1px; text-decoration: none; border-radius: 6px; }
.api-btn:hover { background: var(--gold-dark); color: #fff; }
#flow-select { flex: 1; min-width: 200px; }
.searchrow select { width: auto; }

/* Transfer Network — dark board */
.board-dark { background: #171c24; min-height: 300px; }
.board-overlay-tl { position: absolute; top: 14px; left: 14px; z-index: 3; display: flex; gap: 10px; align-items: center; }
.board-overlay-tl input { width: 240px; background: rgba(12, 16, 22, 0.85); border: 1px solid #2c3644; font-size: 13px; padding: 9px 13px; border-radius: 8px; }
.pill { background: rgba(12, 16, 22, 0.85); border: 1px solid #2c3644; color: #9fb3c8; font-size: 11.5px; letter-spacing: 1px; padding: 8px 14px; border-radius: 999px; white-space: nowrap; }
.pill b { color: #fff; }
.board-overlay-tr { position: absolute; top: 14px; right: 16px; z-index: 3; text-align: right; font-family: var(--mono); font-size: 12px; line-height: 1.55; color: #9fb3c8; pointer-events: none; }
.board-overlay-tr .hl { color: #fff; }
.board-timeline { display: flex; align-items: flex-end; gap: 2px; height: 74px; padding: 8px 14px 20px; background: #12161d; }
.tl-bar { flex: 1; min-width: 8px; background: #31435a; border-radius: 2px 2px 0 0; position: relative; cursor: pointer; }
.tl-bar:hover { background: #4a6280; }
.tl-bar.active { background: var(--gold); }
.tl-bar span { position: absolute; top: 100%; left: 50%; transform: translateX(-50%); font-family: var(--mono); font-size: 9.5px; color: #6b7a8c; padding-top: 3px; white-space: nowrap; }

/* Analytics dashboard panels */
.board-panel { background: var(--panel); padding: 22px 24px; }
.panel-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; margin-bottom: 14px; }
.panel-title { font-size: 20px; font-weight: 700; letter-spacing: 1.5px; }
.panel-sub { font-size: 13px; color: var(--faint); margin-top: 2px; }
.panel-controls { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; font-size: 13px; color: var(--muted); }
.panel-controls label { display: inline-flex; gap: 7px; align-items: center; }
.panel-controls input[type=date] { background: var(--bg2); border: 2px solid transparent; color: var(--text); font-family: var(--mono); font-size: 13px; padding: 8px 10px; border-radius: 8px; outline: none; color-scheme: dark; }
.panel-controls .btn { padding: 9px 16px; font-size: 12.5px; }
.board-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 0 0 30px; }
.board-row .board { margin: 0; }
.donut-row { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.donut-legend { font-size: 12.5px; font-family: var(--mono); display: grid; grid-template-columns: auto auto auto; gap: 4px 14px; align-items: center; }
.donut-legend i { display: inline-block; width: 11px; height: 11px; border-radius: 3px; margin-right: 7px; vertical-align: -1px; }
.donut-legend .pc { text-align: right; color: var(--text); }
.donut-legend .amt { text-align: right; color: var(--faint); }
.table-scroll { overflow-x: auto; }
table.hist { border-collapse: collapse; font-family: var(--mono); font-size: 12px; white-space: nowrap; width: 100%; }
table.hist th { text-align: right; color: var(--faint); font-weight: 500; letter-spacing: 1px; font-size: 10.5px; padding: 7px 10px; border-bottom: 1px solid #4a4a4a; }
table.hist td { text-align: right; padding: 6px 10px; border-bottom: 1px solid #3d3d3d; color: var(--muted); }
table.hist th:first-child, table.hist td:first-child { text-align: left; }
table.hist td.hodl { color: var(--blue); font-weight: 700; }
table.hist td.total { color: var(--text); }

/* Trace graph — black board with TOOLS rail */
.board-black { background: #0e1013; }
.board-tools { position: absolute; left: 0; top: 0; bottom: 0; width: 58px; background: #14171c; z-index: 3; display: flex; flex-direction: column; align-items: center; gap: 10px; padding-top: 12px; }
.tools-label { font-size: 9px; letter-spacing: 2.5px; color: #5c6470; }
.tool-btn { width: 38px; height: 38px; background: #1e232b; border: none; border-radius: 9px; color: #cfd6df; font-size: 16px; cursor: pointer; line-height: 1; padding: 0; }
.tool-btn:hover, .tool-btn.on { background: var(--gold); color: #fff; }
#trace-canvas-wrap { margin-left: 58px; }

@media (max-width: 900px) {
  .board-row { grid-template-columns: 1fr; }
  .board-overlay-tr { display: none; }
  .flow-detail { margin-left: 0; }
}